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Ede4ka [16]
3 years ago
5

This is an Algebra Two Honors question:

Mathematics
1 answer:
Likurg_2 [28]3 years ago
8 0
I'm back so
80% of 12=9.6 grams=gold so

so she wants to add to the alloy to make the gold 92.5% gold so

I'm not sure how to do A or B but I think the answer to B is 2.4 grams


C. so the jewler has 2.4 grams of alloy
we must find out when 2.4=7.5%, what is 100%
so if 2.4=.075x then 24=0.75x then 32 grams=100 %
so 32-2.4=29.6 grams
29.6/32=0.925 or 92.5%

this is not the legit way to do it
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Evaluate the function found in the previous step at X =-3
babunello [35]
x-5y=-4x-2y

In order to evaluate the given function at x = -3, simply replace "x" in the function with -3 and solve.

-3-5y=-4(-3)-2y

<em>Multiply -4 and -3 in the function above.</em>

-3-5y=12-2y

<em>Add 3 on both sides of the equation.</em>

-3-5y+3=12-2y+3-5y=15-2y

<em>Add 2y on both sides of the equation.</em>

-5y+2y=15-2y+2y-3y=15

<em>Divide both sides of the equation by -3.</em>

\frac{-3y}{-3}=\frac{15}{-3}y=-5

Therefore, at x = -3, the value of y = -5. Hence, f(-3) = -5.

Answer:

f(-3) = -5

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7 0
1 year ago
Which ratio is equivalent to 10:85
Nata [24]
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3 years ago
Write the word sentence as an equation. Then solve the equation. A number $k$ increased by 7 is 34. An equation that represents
Monica [59]

Answer: k = 27

Step-by-step explanation:

Here's the complete question:

Write the word sentence as an equation. Then solve the equation. A number k increased by 7 is 34.

An increase in k simply means that there's an addition. This will be:

k + 7 = 34

k = 34 - 7

k = 27

Therefore, the value of k is 27

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olchik [2.2K]

Answer:

13

Step-by-step explanation:

two negatives make a positive

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Verizon [17]
Drag A to negative 5 and B to positive 5.
7 0
3 years ago
Read 2 more answers
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